JP6166517B2 - Electronic device and address setting method - Google Patents

Description

  The present invention relates to an electronic device including a plurality of devices connected in a daisy chain, and an address setting method for the plurality of devices in the electronic device.

  Various methods for setting addresses of a plurality of devices in an electronic apparatus including a plurality of devices connected in a daisy chain by communication lines are disclosed. As a technique generally known as the address setting method, for example, as disclosed in Patent Documents 1 to 3, reception is performed when an address is set in each of a plurality of devices connected in a daisy chain. And the address number obtained by adding a predetermined value to the address number is set as the address number of the own apparatus, and an address number obtained by adding the predetermined value to the received address number is newly generated, and the subsequent apparatus And the like that repeatedly perform the process of transmitting to the network.

JP-A-5-101004 JP-A-7-105121 JP 2001-31028 A

The address setting method in the conventional electronic device as described above has problems in at least the following points.
First, when a new address number is generated in the own device at the time of address setting and transmitted to the subsequent device, the data reliability of the address number to be transmitted can be confirmed by the subsequent device. A method of generating reliability check data and attaching it to a newly generated address number is generally known. However, in this case, since it is necessary to newly generate data for reliability check every time an address number is generated, there is a problem that it takes time to set addresses in a plurality of devices in an electronic device. is there.
Second, in order to reduce the generation time of the above-described reliability check data, a method of preparing reliability check data corresponding to an address number that may be generated as table data is generally used. Known to. In this case, since the number of reliability check data to be prepared increases in proportion to the increase in the number of devices for which addresses are to be set, a certain amount of memory is mounted when manufacturing the device to be mounted on the electronic device. Therefore, it is necessary to provide a wide range of devices that can be mounted on electronic equipment. However, in this case, since the number of reliability check data that the electronic device can have depends on the memory capacity, as a result, the number of devices that can be mounted on the electronic device depends on the memory capacity at the time of manufacturing the device. There was a problem of being restricted.

  In view of the above problems, the present invention provides an electronic device and an address setting method in which the number of devices mounted on the electronic device is hardly restricted while suppressing an increase in time required for address setting.

  The object of the present invention can be achieved by the invention described in the claims as an example.

  According to the electronic device and the address setting method of the present invention, it is possible to provide an electronic device and an address setting method in which the number of devices mounted on the electronic device is hardly limited while suppressing an increase in time required for address setting.

It is the figure which showed roughly the electronic device 1 concerning embodiment of this invention. It is the figure which showed schematically the transmission / reception part 5 concerning embodiment of this invention. It is the figure which showed schematically the address setting part 7 concerning the 1st Embodiment of this invention. It is the figure which showed schematically the address setting data transmission control part 8 concerning embodiment of this invention. It is a flowchart of the address setting method in each IC of the electronic device 1 concerning the 1st Embodiment of this invention. It is the figure which showed the address setting process in the electronic device 1 concerning the 1st Embodiment of this invention in time series. It is the figure which showed schematically the address setting part 7 concerning the 2nd Embodiment of this invention. It is a flowchart of the address setting method in each IC of the electronic device 1 concerning the 2nd Embodiment of this invention. It is the figure which showed the address setting process in the electronic device 1 concerning the 2nd Embodiment of this invention in time series.

An electronic apparatus according to the present invention is daisy chain connected by a communication line, and can communicate with a plurality of devices that communicate with each other via the communication line, and a device at one end of the plurality of devices. And an electronic device that performs data communication, wherein each of the plurality of devices includes an address setting unit that sets an address of the own device, and the received address addition command as an address setting command. A transmission / reception unit that outputs the address setting data provided to the address setting unit of the own device and a subsequent device of the own device, and the address setting unit is common to each of the plurality of devices. If the address is set, depending on the number of times of receiving the address setting data having as the address addition instruction address setting command from the transmitting and receiving unit, before And sets the address value obtained by adding a predetermined value to said common address of the own apparatus as the address of the own device.

The address setting method according to the present invention is capable of communicating with a plurality of devices that are daisy chain-connected by communication lines and perform communication between the devices connected to each other via the communication line, and a device at one end of the plurality of devices. An address setting method for the plurality of devices in an electronic device that performs data communication, wherein each of the plurality of devices includes the received address addition command as an address setting command. A step of outputting address setting data to an address setting unit of the own device and a subsequent device of the own device; and when a common address is set to each of the plurality of devices, the address setting unit depending on the number of times of receiving the address setting data having the address addition instruction as an address setting command, the common address of the own device And having the steps of setting the address value obtained by adding the value as an address of the own device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. In addition, when implementing about the characteristic of this invention, it cannot be overemphasized that it can implement variously in the range which does not deviate from the main point of this invention, without being restricted to the following embodiment.

FIG. 1 is a diagram schematically showing an electronic apparatus 1 according to an embodiment of the present invention. Note that FIG. 1 is provided for explaining the electronic device 1 according to the embodiment of the present invention, and for convenience, an unnecessary configuration is not shown in the description of the electronic device 1 according to the embodiment of the present invention. However, this does not prevent a configuration other than the configuration shown in FIG. That is, the electronic device 1 may have a configuration other than that shown in FIG.

(First embodiment)

The configuration of the electronic apparatus 1 according to the first embodiment of the present invention will be described with reference to FIGS.

The electronic device 1 according to the first embodiment of the present invention includes IC1 to ICn and a control unit 2 as a plurality of devices. IC1 to ICn are daisy chain connections in which adjacent ICs are connected to each other by a communication line 3, and perform communication between ICs connected to each other via the communication line 3. Further, data communication between the control unit 2 and each IC in the electronic device 1 is performed by data including reliability check data for checking reliability such as whether data destruction has occurred due to data communication. The control unit 2 is connected to the IC 1 that is one end of the plurality of ICs connected in a daisy chain via the communication line 4. However, the control unit 2 may be connected to ICn which is the other end of the plurality of ICs connected in a daisy chain via the communication line 4.

The control unit 2 includes a well-known CPU, memory, and the like, and is configured to be able to control IC1 to ICn via the communication line 4, and includes an address setting command for setting an address in each IC. Address setting data can be generated or read from memory and sent to IC1. In addition, the control unit 2 generates address initial value setting data including an address initial value setting command for setting an initial value of an address in each IC as necessary, or reads the data from the memory and transmits the data to the IC 1. It may be something that can be done. The address setting data includes at least an address setting command and reliability check data for checking the reliability of the address setting command. However, the address setting data may include other data in addition to the address setting command and reliability check data. In this case, the reliability check data may be data for checking the reliability of the address setting command and other data. The address initial value setting data is also configured to include at least an address initial value setting command and reliability check data for checking the reliability of the address initial value setting command. However, the address initial value setting data may include other data in addition to the address initial value setting command and the reliability check data. In this case, the reliability check data may be data for checking the reliability of the address initial value setting command and other data.

Each of IC1 to ICn includes a transmission / reception unit 5 as a first transmission / reception unit, an address setting unit 7, an address setting data transmission control unit 8, and a transmission / reception unit 9 as a second transmission / reception unit. Data communication between the ICs can be performed via the communication line 3.

The transmission / reception unit 5 is electrically connected to the communication line 3 or the communication line 4 and can receive data arriving at each of the IC1 to ICn from the outside via the communication line 3 or the communication line 4. In addition, although not described in detail in the present embodiment, a function of transmitting data from the inside of each of the IC1 to ICn via the communication line 3 or the communication line 4 to the outside may be provided.

FIG. 2 is a diagram schematically showing the transmission / reception unit 5 according to the embodiment of the present invention. As shown in FIG. 2, the transmission / reception unit 5 includes a data reception transfer unit 5A, a reliability check unit 5B, and a data type determination unit 5C. The data reception transfer unit 5A can transfer the data received from the outside to the reliability check unit 5B and other circuits in the own IC for each bit. Based on the reliability check data included in the received data, the reliability check unit 5B confirms whether or not the reliability of the received data satisfies a preset criterion. The reliability check unit 5B confirms whether or not the reliability of the received data satisfies a preset criterion, such as a command of the received data transferred from the data reception transfer unit 5A and the reliability. After the completion of reception as a single piece of data including at least sex check data, that is, as one packet. The data type determination unit 5C determines the type of the received data when the reliability of the received data satisfies the standard, and each IC includes an appropriate process for the received data. A process of distributing the received data to each function is performed.

The address setting unit 7 has a function of setting a predetermined value for the address of its own IC in accordance with an instruction of the address setting command when the received data is address setting data including an address setting command. The address setting command of the address setting data includes an address addition command for adding a predetermined value to the address of the own IC, an address setting command for setting a predetermined value to the address of the own IC, and the like.

FIG. 3 is a diagram schematically showing the address setting unit 7 according to the first embodiment of the present invention. As shown in FIG. 3, the address setting unit 7 according to the first embodiment of the present invention includes a command determination unit 7A, a storage unit 7B, an address setting processing unit 7C, and an address setting notification unit 7D. The unit 5 is electrically connected. When the command determination unit 7A receives the reception data output from the transmission / reception unit 5, the command determination unit 7A determines whether the reception data is address initial value setting data or address setting data. The storage unit 7B is a memory. The address setting processing unit 7C includes an address initial value setting unit 7E and an address addition processing unit 7F. When the received data is provided with an address initial value setting command and the command determination unit 7A determines that the received data is address initial value setting data, the address initial value setting unit 7E stores the memory according to the address initial value setting command. An address as an initial value of the address is set for 7B. If the command determination unit 7A determines that the received data has an address setting command and is address setting data, the address addition processing unit 7F sets an address in the storage unit 7B according to the address setting command. To do. In the present embodiment, the address setting performed by the address addition processing unit 7F for the storage unit 7B is a process of adding a predetermined value to the address stored in the storage unit 7B. The address setting notification unit 7D outputs an address setting processing identification signal capable of identifying that the address has been set when the address is set by the address addition processing unit 7F. Note that the addition process described above may be positioned to add a negative value.

The address setting data transmission control unit 8 adds a predetermined value to the IC address predetermined in the own IC when the address setting unit 7 sets a predetermined value for the address of the own IC. The address setting data including the instruction as an address setting command is output so that it can be transmitted to the subsequent IC of the own IC.

FIG. 4 is a diagram schematically showing the address setting data transmission control unit 8 according to the first embodiment of the present invention. As shown in FIG. 4, the address setting data transmission control unit 8 includes a storage unit 8A and an address setting data generation unit 8B. The storage unit 8A is a memory in which address setting data is stored in advance. The address setting data includes at least an address setting command and reliability check data for checking the reliability of the address setting command. However, the address setting data may include other data in addition to the address setting command and reliability check data. In this case, the reliability check data may be data for checking the reliability of the address setting command and other data. When the address setting data generation unit 8B receives the address setting processing identification signal output from the address setting unit 7, the address setting data generation unit 8B reads out the address setting data from the storage unit 8A and outputs the data. Note that the address setting command of the address setting data stored in the storage unit 8A may include an address setting command similar to the address setting data transmitted from the control unit 2 or a different address setting command. Also good. Further, the number of types of address setting data stored in the storage unit 8A of each IC is preferably as small as possible, and is preferably equal to or less than the number of ICs included in the electronic device 1, and more preferably one type. The smaller the type of address setting data stored in the storage unit 8A of each IC, the smaller the memory capacity and consequently the area of the storage unit 8A. As a result, the area of the electronic device 1 can be reduced. Can do. The address setting data stored in the storage unit 8A may include an address setting command and reliability check data separately, and the address setting command and reliability check separately provided in the storage unit 8A. The address setting data may be newly generated by combining the business data with the address setting data generation unit 8B.

The transmission / reception unit 9 is electrically connected to the communication line 3, the transmission / reception unit 5, and the address setting data transmission control unit 8. Data is transmitted bit by bit from each of the IC 1 to ICn through the communication line 3. Can be sent. The transmission / reception unit 9 includes a first terminal to which the data output from the transmission / reception unit 5 is input, and a second terminal to which the data output from the address setting data transmission control unit 8 is input. The data input from the second terminal may be transmitted with higher priority than the data input from the first terminal. The fact that data input from the second terminal is preferentially transmitted over data input from the first terminal means that the data input from the second terminal is processed while the data input from the second terminal is being processed. When data is input from the first terminal, the data input from the first terminal is discarded, and data is input from the second terminal while processing the data input from the first terminal. In the case of input, this indicates that processing for data input from the first terminal is interrupted and discarded, and processing for data input from the second terminal is started. Although not described in detail in the present embodiment, a function of receiving data arriving at each of IC1 to ICn from the outside via the communication line 3 may be provided.

Next, an address setting method in the electronic device 1 according to the first embodiment of the present invention will be described.

First, when power is turned on to each unit of the electronic device 1 to enable operation, the electronic device 1 performs processing for setting an initial value to the address of each IC.

The control unit 2 transmits address initial value setting data to the IC 1 via the communication line 4. The address initial value setting data includes, for example, an address initial value setting command and a CRC as reliability check data for the address initial value setting command. The address initial value setting command is, for example, a combination of “information indicating that the command is an address setting command” and “command for setting the initial address value to a predetermined value”, that is, an address setting command. It is. Here, in the present embodiment, the predetermined value is “0”. However, it goes without saying that the predetermined value is not limited to this.

When the address initial value setting data is received by the transmission / reception unit 5, the IC 1 confirms the reliability of the received data by the reliability check unit 5B. If the reliability of the address initial value setting data satisfies the standard, The data type determination unit 5C determines that the data is related to address setting, and transmits address initial value setting data to the address setting unit 7. The address setting unit 7 determines that the data is address initial value setting data by the command determination unit 7A, and sets the initial value of the address in the storage unit 7B by the address initial value setting unit 7E. In this embodiment, the address is set to “0” according to the address initial value setting command.

In addition, when the transmission / reception unit 5 of the IC 1 receives the address initial value setting data, the address initial value setting data is distributed to the address setting unit 7 after predetermined processing as described above, and the address is set so as to reach the transmission / reception unit 9. Output initial value setting data. When the transmission / reception unit 9 receives the address initial value setting data, the transmission / reception unit 9 performs processing for transmitting the address initial value setting data to the IC 2 via the communication line 3.

When IC2 receives the address initial value setting data from IC1, IC2 confirms the reliability of the data in the same manner as IC1, and when the reliability of the address initial value setting data satisfies the standard, the address initial value setting command Accordingly, “0” is set in the storage unit 7B as the address of the own IC. Similarly to IC 1, the transmission / reception unit 5 of the IC 2 distributes the address initial value setting data to the address setting unit 7 and outputs the address initial value setting data so as to reach the transmission / reception unit 9. When the transmission / reception unit 9 receives the address initial value setting data, the transmission / reception unit 9 performs processing for transmitting the address initial value setting data to the IC 3 via the communication line 3.

When IC3 receives the address initial value setting data from IC2, IC3 checks the reliability of the data in the same manner as IC1, and when the reliability of the address initial value setting data satisfies the standard, the address initial value setting command Accordingly, “0” is set in the storage unit 7B as the address of the own IC. Similarly to IC 1, the transmission / reception unit 5 of the IC 3 distributes the address initial value setting data to the address setting unit 7 and outputs the address initial value setting data so as to reach the transmission / reception unit 9. When receiving the address initial value setting data, the transmission / reception unit 9 performs processing for transmitting the address initial value setting data to the IC 4 (not shown) via the communication line 3.

By repeating the above processing, each IC sets the initial value of the address in its own IC according to the received address initial value setting data. Further, a signal notifying that an initial value has been set for the address of ICn may be transmitted from ICn to the control unit 2 via the communication line 3 and the communication line 4.

Next, the electronic device 1 performs a process of setting an address for each IC.

The control unit 2 transmits address setting data to the IC 1 via the communication line 4. The address setting data includes, for example, an address setting command and a CRC as data for checking reliability of the address setting command. The address setting command is, for example, a combination of “information indicating that the command is an address setting command” and “command for adding a predetermined value to the address”, that is, an address addition command. Here, in the present embodiment, the predetermined value is “1”. However, it goes without saying that the predetermined value is not limited to this.

Hereinafter, an address setting method in each IC of the electronic apparatus 1 according to the first embodiment of the present invention will be described with reference to FIGS. 5 and 6. FIG. 5 is a flowchart of an address setting method in each IC of the electronic device 1 according to the first embodiment of the present invention. FIG. 6 is a diagram showing the address setting process in the electronic device 1 according to the first embodiment of the present invention in time series. In FIG. 6, tk (k is a natural number) represents time. Further, A (Dn) indicates that the reliability check unit 5B receives from the data reception / transfer unit 5A after the data reception / transfer unit 5A in the transmission / reception unit 5 of each IC starts to receive one address setting data Dn. This is a period until reception of the address setting data Dn is completed, and this period is indicated by a solid arrow with a black dot at the start point. B shows that the address setting data newly output by the address setting data transmission control unit 8 in accordance with the address setting data Dn after the reliability check unit 5B completes reception of the one address setting data Dn. This is a period until the transmission / reception unit 9 is reached, and this period is indicated by a one-dot chain line arrow with the start point as a black point. C (Dn) is a period from when the transmission / reception unit 9 starts to receive one address setting data Dn to when the transmission processing of the one address setting data Dn is completed. This is indicated by a dotted arrow. In addition, A (Dn), B, and C (Dn) described in the region surrounded by the arrow indicating the time axis t and the long chain line H1 indicate the period of processing performed in the IC1, A (Dn), B, and C (Dn) described in the region surrounded by the long chain line H1 and the long chain line H2 indicate the period of processing performed in the IC2, and are on the long chain line H2. A (Dn), B, and C (Dn) described in the area indicate periods of processing performed in the IC 3. Note that among the dotted arrows representing C (Dn) shown in FIG. 6, C (Dn) marked with “×” indicates that the address setting data Dn described in parentheses of the C is received by the transmitting / receiving unit 9. This shows that the transmission process was not performed. Also, the long two-dot chain line arrow starting from the black point in FIG. 6 indicates that the address setting data Dn processed by the transmission / reception unit 5 during A (Dn) on the start point side is C (Dn ) Is processed by the transmission / reception unit 9, and the address setting data Dn processed by the transmission / reception unit 9 during C (Dn) on the start point side is the tip of the arrow next. It is shown that processing is performed by the transmission / reception unit 5 during A (Dn).

As described above, the data reception transfer unit 5A and the transmission / reception unit 9 can output the received data bit by bit. For this reason, from the time when reception of one data is started at the data reception / transfer unit 5A to the time when reception of the one data output from the data reception / transfer unit 5A is started at the reliability check unit 5B of its own IC. The period until the time when the one data is started to be received by the transmitting / receiving unit 9 of the own IC and the time when the one data is started to be received by the data receiving / forwarding unit 5A of the next IC is the data Is much shorter than the period from the start of reception by the data reception transfer unit 5A to the completion of reception as one packet. As described above, in the present embodiment, when one piece of data is received, the data reception transfer unit 5A starts to receive data, the reliability check unit 5B starts to receive the data, For convenience, the time when the transmission / reception unit 9 starts receiving the data and the time when the data reception / transfer unit 5A of the next-stage IC starts receiving data will be described as the same time.

The IC 1 starts receiving the address setting data (hereinafter referred to as “address setting data D1”) generated by the control unit 2 at the data reception / transfer unit 5A at time t1, and from the data reception / transfer unit 5A to the reliability check unit. The bit-wise transfer of the address setting data D1 to 5B is started, and the reception of the address setting data D1 is completed by the reliability check unit 5B by time t2 (A (D1)). When the reception of the address setting data D1 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data D1 (step S0), and the reliability of the address setting data D1 satisfies the standard. If so, the data type determination unit 5C determines that the data is related to address setting (step S1), and transmits the address setting data D1 to the address setting unit 7.

Upon receiving the address setting data D1, the address setting unit 7 determines that the address setting data D1 is address setting data by the command determination unit 7A (step S2), and sets the address of its own IC, that is, an address setting process The address addition processing unit 7F of the unit 7C performs processing for adding a predetermined value to the address to the storage unit 7B (step S3). In the present embodiment, “1” is added to the address according to the address setting data D1. As a result, the address of IC1 is “1”. In addition, information indicating that a predetermined value is added to the address stored in the storage unit 7B by the address addition processing unit 7F is output as an address setting processing identification signal by the address setting notification unit 7D.

When the address setting data transmission control unit 8 receives the address setting process identification signal, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data D2”), and receives the address setting data D2. Output by time t3 (B). The transmission / reception unit 9 starts receiving the address setting data D2 output from the address setting data transmission control unit 8 at time t3, and completes the transmission process toward the IC2 by time t4 (C (D2)) (step S4). Here, the address setting data output from the address setting data transmission control unit 8 includes, for example, an address setting command and a CRC as data for checking the reliability of the address setting command. The address setting command is, for example, a combination of “information indicating that the command is an address setting command” and “command for adding a predetermined value to the address”, that is, an address addition command. Here, in the present embodiment, the predetermined value is “1”. However, it goes without saying that the predetermined value is not limited to this.

In step S0, if the reliability check unit 5B determines that the reliability of the data received from the control unit 2 does not satisfy the standard, the received data is discarded (step S5). In step S1, if the transmission / reception unit 5 determines that the data received from the control unit 2 is not address setting data, the transmission / reception unit 5 distributes the received data to other functions that are not the address setting unit 7 (step S6). ). If it is determined in step S2 that the received data is not address setting data, the command determination unit 7A performs address initial value setting processing or other processing (step S7).

On the other hand, when the data reception transfer unit 5A of the IC 1 starts receiving the address setting data D1 at time t1, as described above, the data setting transfer unit 5A distributes the address setting data D1 to the address setting unit 7 bit by bit after the predetermined processing, and also transmits and receives The address setting data D1 is output bit by bit so as to reach 9. The transmission / reception unit 9 starts receiving the address setting data D1 at time t1, and completes transmission of the address setting data D1 to the IC2 by time t2 (C (D1)).

The IC 2 starts reception of the address setting data D1 at the time t1 in the data reception transfer unit 5A and starts transfer of the address setting data D1 from the data reception transfer unit 5A to the reliability check unit 5B for each bit. By t2, the reliability check unit 5B completes the reception of the address setting data (A (D1)). When the reception of the address setting data D1 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data D1, and when the reliability of the address setting data D1 satisfies the standard. Similarly to IC1, the address setting unit 7 adds "1" to its own IC address according to the address setting command of the address setting data D1. As a result, the address of IC2 is “1”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data D3”), and outputs the address setting data D3 by time t3 ( B). The transmission / reception unit 9 starts receiving the address setting data D3 output from the address setting data transmission control unit 8 at time t3, and completes the transmission processing toward the IC3 by time t4 (C (D3)). On the other hand, when the data reception transfer unit 5A of IC2 starts receiving the address setting data D1 at time t1, as described above, the address setting data D1 is distributed to the address setting unit 7 bit by bit after the predetermined processing, and the transmission / reception unit The address setting data D1 is output bit by bit so as to reach 9. The transmission / reception unit 9 starts receiving address setting data D1 at time t1, and completes transmission of address setting data D1 to IC3 by time t2 (C (D1)).

Further, the IC 2 starts receiving the address setting data D2 generated by the IC 1 at the data reception transfer unit 5A at time t3, and at the same time the bit of the address setting data D2 from the data reception transfer unit 5A to the reliability check unit 5B. Each transfer is started, and the reception of the address setting data is completed by the reliability check unit 5B by time t4 (A (D2)). Further, when the reception of the address setting data D2 as a packet is completed, the reliability check unit 5B checks the reliability of the address setting data D2, and if the reliability of the address setting data D2 satisfies the standard Similarly to IC1, the address setting unit 7 adds "1" to its own IC address according to the address setting command of the address setting data D2. As a result, the address of IC2 is “2”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter “address setting data D4”), and outputs the address setting data D4 by time t5 (B ). The transmission / reception unit 9 starts receiving the address setting data D4 at time t5, and completes the transmission process toward the IC3 by time t6 (C (D4)). On the other hand, when the data reception transfer unit 5A of IC2 starts receiving the address setting data D2 at time t3, the address setting data D2 is distributed to the address setting unit 7 bit by bit after the predetermined processing as described above, and the transmission / reception unit The address setting data D2 is output bit by bit so as to reach 9. In the present embodiment, the address setting data D2 reaches the transmission / reception unit 9 at time t3.

Here, the address setting data D1, the address setting data D3, and the address setting data D4 are transmitted from the IC2 to the IC3 as described above. As shown in FIG. 6, the address setting data D2 is transferred to the IC3. Not sent. This is because the transmission / reception unit 9 preferentially processes the data input from the second terminal with respect to the data input from the first terminal. In the present embodiment, as described above, the address setting data D2 and the address setting data D3 reach the transmission / reception unit 9 of the IC 2 at time t3. At this time, the address setting data D2 output from the transmission / reception unit 5 is input from the first terminal of the transmission / reception unit 9, and the address setting data D3 output from the address setting data transmission control unit 8 is the second of the transmission / reception unit 9. Since the signal is input from the terminal, the address setting data D3 is preferentially transmitted in the transmission / reception unit 9, and the address setting data D2 is discarded. Therefore, the address setting data D2 is not transmitted to the IC3.

The IC 3 starts reception of the address setting data D1 at the time t1 in the data reception transfer unit 5A and starts transfer of the address setting data D1 bit by bit from the data reception transfer unit 5A to the reliability check unit 5B. By t2, the reliability check unit 5B completes reception of the address setting data D1 (A (D1)). When the reception of the address setting data D1 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data D1. If the address setting data D1 satisfies the reliability, the reliability check unit 5B determines the reliability of the IC1. In the same manner as described above, the address setting unit 7 adds “1” to the own IC address in accordance with the address setting command of the address setting data D1. As a result, the address of IC 3 is “1”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data D5”), and outputs the address setting data D5 by time t3 ( B). The transmission / reception unit 9 starts receiving the address setting data D5 output from the address setting data transmission control unit 8 at time t3, and completes transmission processing toward the IC 4 (not shown) by time t4 (C (D5)). . On the other hand, when the data reception transfer unit 5A of the IC 3 starts to receive the address setting data D1 at time t1, the address setting data D1 is distributed to the address setting unit 7 bit by bit after predetermined processing as described above, and the transmission / reception unit The address setting data D1 is output bit by bit so as to reach 9. The transmission / reception unit 9 starts receiving the address setting data D1 at time t1, and completes transmission of the address setting data D1 to the IC 4 by time t2 (C (D1)).

Further, the IC 3 starts receiving the address setting data D3 generated by the IC 2 at the data reception transfer unit 5A at the time t3, and at the same time the bit of the address setting data D2 from the data reception transfer unit 5A to the reliability check unit 5B. Each transfer is started, and the reception of the address setting data is completed by the reliability check unit 5B by time t4 (A (D3)). When the reception of the address setting data D3 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data D3. If the address setting data D3 satisfies the reliability, the reliability check unit 5B determines that the IC1 In the same manner as described above, the address setting unit 7 adds “1” to the own IC address in accordance with the address setting command of the address setting data D3. As a result, the address of IC3 is “2”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter “address setting data D6”), and outputs the address setting data D6 by time t5 (B ). The transmission / reception unit 9 starts receiving the address setting data D6 at time t5, and completes transmission processing toward the IC 4 by time t6 (C (D6)). On the other hand, when the data reception transfer unit 5A of the IC 3 starts receiving the address setting data D3 at time t3, the address setting data D3 is distributed to the address setting unit 7 bit by bit after predetermined processing as described above, and the transmission / reception unit The address setting data D3 is output bit by bit so as to reach 9.

Further, IC3 starts reception of address setting data D4 generated by IC2 at data reception transfer unit 5A at time t5 and bits of address setting data D4 from data reception transfer unit 5A to reliability check unit 5B. Each transfer is started, and the reception of the address setting data is completed by the reliability check unit 5B by time t6 (A (D4)). When the reception of the address setting data D4 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data D4. If the address setting data D4 satisfies the reliability, the reliability check unit 5B determines that the IC1 In the same manner as described above, the address setting unit 7 adds “1” to the own IC address in accordance with the address setting command of the address setting data D4. As a result, the address of IC3 is “3”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter “address setting data D7”), and outputs the address setting data D7 by time t7 (B ). The transmission / reception unit 9 starts receiving the address setting data D7 at time t7, and completes transmission processing toward the IC 4 by time t8 (C (D7)). On the other hand, when the data reception transfer unit 5A of the IC 3 starts receiving the address setting data D4 at time t5, the address setting data D4 is distributed to the address setting unit 7 bit by bit after the predetermined processing as described above, and the transmission / reception unit The address setting data D4 is output bit by bit so as to reach 9.

Here, the address setting data D1, the address setting data D5, the address setting data D6, and the address setting data D7 are transmitted from the IC3 to the IC4 as described above. However, as shown in FIG. D3 and address setting data D4 are not transmitted to IC4. This is because the transmission / reception unit 9 preferentially processes the data input from the second terminal with respect to the data input from the first terminal. In the present embodiment, as described above, the address setting data D3 and the address setting data D5 reach the transmission / reception unit 9 of the IC 3 at time t3. At this time, the address setting data D3 output from the transmission / reception unit 5 is input from the first terminal of the transmission / reception unit 9, and the address setting data D5 output from the address setting data transmission control unit 8 is the second of the transmission / reception unit 9. Since the signal is input from the terminal, the address setting data D5 is preferentially transmitted in the transmission / reception unit 9, and the address setting data D3 is discarded. At time t5, the address setting data D4 and address setting data D6 arrive at the transmission / reception unit 9 of the IC3. At this time, the address setting data D4 output from the transmission / reception unit 5 is input from the first terminal of the transmission / reception unit 9, and the address setting data D6 output from the address setting data transmission control unit 8 is the second of the transmission / reception unit 9. Since the signal is input from the terminal, the address setting data D6 is preferentially transmitted in the transmission / reception unit 9, and the address setting data D4 is discarded. Therefore, the address setting data D3 and the address setting data D4 are not transmitted to the IC 4.

Since IC4 receives address setting data D1, address setting data D5, address setting data D6, and address setting data D7 from IC3, the address of IC4 is “4”.

By repeating the above processing, each IC can set an address different from that of the other ICs in its own IC according to the received address setting data. A signal notifying that the address of ICn has been set may be transmitted from ICn to the control unit 2 via the communication line 3 and the communication line 4.

As described above, according to the first embodiment of the present invention, in particular, when the address setting unit 7 sets a predetermined value for the address of the own IC, the predetermined address is set to the predetermined IC address. Since it has an address setting data transmission control unit 8 that outputs address setting data having an address addition command for adding values as an address setting command so that it can be transmitted to a device subsequent to its own IC. Different addresses can be set between the ICs of the electronic apparatus 1 without generating a new address number in each IC. For this reason, first, it is not necessary to generate new reliability check data each time data for setting an address is transmitted to each IC, and an increase in time required for address setting is suppressed. Is possible. Second, since the reliability check data that the electronic device 1 should have does not depend on the memory capacity, the number of devices that can be mounted on the electronic device is limited depending on the memory capacity at the time of manufacturing the device. There is no end.

Further, in the conventional electronic device, communication is performed using at least the address setting command, the address number, and the data including the data for checking the reliability of these data. According to the first embodiment of the present invention, however, Since the data to be communicated does not necessarily have to define the address number, the amount of data communication can be reduced, and the address can be set to each IC at a higher speed.

Further, according to the first embodiment of the present invention, the transmission / reception unit 9 includes the first terminal to which the data output from the transmission / reception unit 5 is input and the data output from the address setting data transmission control unit 8. When data is input from the first terminal while processing data input from the second terminal, the data is input from the first terminal. Since the processing of the data input from the second terminal is preferentially processed, the absolute value of the difference between the addresses of the ICs connected to each other may be the same among all the ICs. it can.

(Second Embodiment)

A configuration of an electronic apparatus 1 according to the second embodiment of the present invention will be described with reference to FIGS. 1 and 7.

The electronic device 1 according to the second embodiment of the present invention is schematically the same as the electronic device 1 according to the first embodiment of the present invention. However, the configuration of the address setting unit 7 is different from that of the first embodiment. Further, along with the difference in the configuration of the address setting unit 7, the address setting method for each IC of the electronic device 1 is also partially different. The second embodiment of the present invention will be described in detail below. In addition, the same number is attached | subjected about the structure similar to 1st Embodiment, and the description is abbreviate | omitted suitably.

FIG. 7 is a diagram schematically showing the address setting unit 7 according to the second embodiment of the present invention. As shown in FIG. 7, the address setting unit 7 includes a storage unit 7 </ b> B, an address setting processing unit 7 </ b> G, and an address setting notification unit 7 </ b> D, and is electrically connected to the transmission / reception unit 5. The address setting processing unit 7G sets an address in the storage unit 7B according to the address setting command of the address setting data. In the present embodiment, the address setting performed by the address setting processing unit 7G for the storage unit 7B includes a case where a predetermined value is set for the storage unit 7B and a case where a predetermined value is added to the storage unit 7B. including.

Next, an address setting method in the electronic apparatus 1 according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a flowchart of an address setting method in each IC of the electronic device 1 according to the second embodiment of the present invention. FIG. 9 is a diagram showing, in time series, address setting processing in the electronic device 1 according to the second embodiment of the present invention. Note that A (dn), B, and C (dn) in FIG. 9 are respectively “Dn” and “dn” in the description of A (Dn), B, and C (Dn) in the first embodiment of the present invention. Since it is the same as what was read, detailed description in this embodiment is abbreviate | omitted. In addition, the positions of the solid line arrow, the one-dot chain line arrow, the dotted line arrow, the long chain line arrow, and the long two-dot chain line arrow indicate that “Dn” used in these descriptions of the first embodiment of the present invention is “dn”. Since these are the same as those replaced, detailed description in this embodiment will be omitted.

Also in the present embodiment, when one piece of data is received, the data reception / transfer unit 5A starts receiving data, the reliability check unit 5B starts receiving data, and the transmission / reception unit For convenience, the time at which reception of the data is started at 9 and the time at which reception of data at the data reception transfer unit 5A of the next IC is started will be described as the same time.

When power is turned on to each part of the electronic device 1 and the controller 1 becomes operable, the control unit 2 transmits address setting data to the IC 1 via the communication line 4. The address setting data includes, for example, an address setting command and a CRC as data for checking reliability of the address setting command. The address setting command is, for example, a combination of “information indicating that the command is an address setting command” and “command for setting the address to a predetermined value”, that is, an address setting command. Here, in the present embodiment, the predetermined value is “0”. However, it goes without saying that the predetermined value is not limited to this.

The IC 1 starts receiving the address setting data (hereinafter, “address setting data d1”) generated by the control unit 2 at the data reception / transfer unit 5A at time t1, and from the data reception / transfer unit 5A to the reliability check unit. The bit-wise transfer of the address setting data d1 to 5B is started, and the reception of the address setting data d1 is completed by the reliability check unit 5B by time t2 (A (d1)). When the reception of the address setting data d1 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data d1 (step ST0), and the reliability of the address setting data d1 satisfies the standard. If it is, the data type determination unit 5C determines that the data is address setting data (step ST1), and transmits the address setting data d1 to the address setting unit 7.

Upon receiving the address setting data d1, the address setting unit 7 performs a process of setting a predetermined value for the address in the storage unit 7B by the address setting processing unit 7G according to the address setting command of the address setting data d1 (step ST2). . In the present embodiment, “0” is set as the address in accordance with the address setting command of the address setting data d1. As a result, the address of IC1 is “0”. Also, information indicating that an address has been set in the storage unit 7F by the address setting processing unit 7G is output as an address setting processing identification signal by the address setting notification unit 7D.

When the address setting data transmission control unit 8 receives the address setting process identification signal, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data d2”), and stores the address setting data d2. Output by time t3 (B). The transmission / reception unit 9 starts receiving the address setting data d2 output from the address setting data transmission control unit 8 at time t3, and completes the transmission processing toward the IC2 by time t4 (C (d2)) (step ST3). Here, the address setting data output from the address setting data transmission control unit 8 includes, for example, an address setting command and a CRC as data for checking the reliability of the address setting command. The address setting command is, for example, a combination of “information indicating that the command is an address setting command” and “command for adding a predetermined value to the address”, that is, an address addition command. Here, in the present embodiment, the predetermined value is “1”. However, it goes without saying that the predetermined value is not limited to this.

In step ST0, when the reliability check unit 5B determines that the reliability of the data received from the control unit 2 does not satisfy the standard, the received data is discarded (step ST4). If the transmission / reception unit 5 determines in step ST1 that the data received from the control unit 2 is not address setting data, the transmission / reception unit 5 distributes the received data to other functions that are not the address setting unit 7 (step ST5). ).

On the other hand, when the data reception transfer unit 5A of IC1 starts receiving the time t1 address setting data d1, the address setting data d1 is distributed to the address setting unit 7 bit by bit after the predetermined processing as described above, and the transmission / reception unit 9 The address setting data d1 is output bit by bit so as to reach The transmission / reception unit 9 starts receiving the address setting data d1 at time t1, and completes the transmission processing of the address setting data d1 toward the IC2 by time t2 (C (d1)).

The IC 2 starts reception of the address setting data d1 at the time t1 in the data reception transfer unit 5A and starts transfer of the address setting data d1 from the data reception transfer unit 5A to the reliability check unit 5B for each bit. By t2, the reliability check unit 5B completes the reception of the address setting data (A (d1). When the reliability check unit 5B completes the reception of the address setting data d1 as a packet, the address setting data d1 When the reliability of the address setting data d1 satisfies the standard, the address setting unit 7 sets the own IC address according to the address setting command of the address setting data d1 in the same manner as IC1. In addition, the address setting data transmission controller 8 sets the address setting data generator 8B. The address setting data is read from the unit 8A (hereinafter “address setting data d3”) and the address setting data d3 is output by time t3 (B) The transmitting / receiving unit 9 outputs the address output from the address setting data transmission control unit 8 Reception of the setting data d3 is started at time t3, and the transmission process toward the IC3 is completed by time t4 (C (d3)), while the data reception transfer unit 5A of the IC2 receives the address setting data d1 at time t1. As described above, the address setting data d1 is distributed to the address setting unit 7 bit by bit after predetermined processing as described above, and the address setting data d1 is output bit by bit so as to reach the transmission / reception unit 9. The unit 9 starts to receive the address setting data d1 at time t1, and is directed to the IC3 of the address setting data d1 by time t2. And it completes the transmission (C (d1)).

Further, the IC 2 starts to receive the address setting data d2 generated by the IC 1 at the data reception transfer unit 5A at time t3 and receives the address setting data d2 from the data reception transfer unit 5A to the reliability check unit 5B. Transfer for each bit is started, and reception of address setting data is completed in the reliability check unit 5B by time t4 (C (d2)). When the reception of the address setting data d2 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data d2, and if the reliability of the address setting data d2 satisfies the standard. In the same manner as IC1, the address setting unit 7 adds “1” to the address of its own IC in accordance with the address setting command of the address setting data d2. As a result, the address of IC2 is “1”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data d4”) and outputs the address setting data d4 by time t5 (B ). The transmission / reception unit 9 starts receiving the address setting data d4 at time t5, and completes transmission processing toward the IC3 by time t6 (C (d4)). On the other hand, when the data reception transfer unit 5A of IC2 starts receiving the address setting data d2 at time t3, the address setting data d2 is distributed to the address setting unit 7 bit by bit after the predetermined processing as described above, and the transmission / reception unit The address setting data d2 is output bit by bit so as to reach 9. In the present embodiment, the address setting data d2 reaches the transmission / reception unit 9 at time t3.

Here, the address setting data d1, the address setting data d3, and the address setting data d4 are transmitted from the IC2 to the IC3 as described above. However, as shown in FIG. 9, the address setting data d2 is transmitted to the IC3. Not sent. This is because the transmission / reception unit 9 preferentially processes the data input from the second terminal with respect to the data input from the first terminal. In the present embodiment, as described above, the address setting data d2 and the address setting data d3 reach the transmission / reception unit 9 of the IC 2 at time t3. At this time, the address setting data d2 output from the transmission / reception unit 5 is input from the first terminal of the transmission / reception unit 9, and the address setting data d3 output from the address setting data transmission control unit 8 is the second of the transmission / reception unit 9. Since the signal is input from the terminal, the address setting data d3 is preferentially transmitted in the transmission / reception unit 9, and the address setting data d2 is discarded. Therefore, the address setting data d2 is not transmitted to the IC3.

The IC 3 starts reception of the address setting data d1 at the time t1 in the data reception transfer unit 5A and starts transfer of the address setting data d1 from the data reception transfer unit 5A to the reliability check unit 5B for each bit. By t2, the reliability check unit 5B completes the reception of the address setting data d1 (A (d1)). When the reception of the address setting data d1 as a packet is completed, the reliability check unit 5B checks the reliability of the address setting data d1, and if the address setting data d1 satisfies the reliability, the reliability check unit 5B determines that the reliability of the address setting data d1 is IC1. In the same manner as described above, the address setting unit 7 sets “0” to its own IC address in accordance with the address setting command of the address setting data d1. As a result, the address of IC3 is “0”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data d5”) and outputs the address setting data d5 by time t3 ( B). The transmission / reception unit 9 starts receiving the address setting data d5 output from the address setting data transmission control unit 8 at time t3, and completes transmission toward the IC 4 by time t4 (C (d5)). On the other hand, when the data reception transfer unit 5A of the IC 3 starts receiving the address setting data d1 at the time t1, as described above, the data setting transfer unit 5A distributes the address setting data d1 to the address setting unit 7 after the predetermined processing and reaches the transmission / reception unit 9. Thus, the address setting data d1 is output for each bit. The transmission / reception unit 9 starts receiving the address setting data d1 at time t1, and completes transmission of the address setting data d1 to the IC 4 by time t2 (C (d1)).

Further, IC3 starts reception of the address setting data d3 generated by IC2 at the data reception transfer unit 5A at time t3, and at the same time, bits of the address setting data d3 from the data reception transfer unit 5A to the reliability check unit 5B. Each transfer is started, and the reception of the address setting data d3 is completed by the reliability check unit 5B by time t4 (A (d3)). When the reception of the address setting data d3 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data d3. If the address setting data d3 satisfies the reliability, the reliability check unit 5B In the same manner as described above, the address setting unit 7 adds “1” to the address of its own IC in accordance with the address setting command of the address setting data d3. As a result, the address of IC3 is “1”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data d6”) and outputs the address setting data d6 by time t5 ( B). The transmission / reception unit 9 starts receiving the address setting data d6 at time t5, and completes transmission toward the IC 4 by time t6 (C (d6)). On the other hand, when the data reception transfer unit 5A of the IC 3 starts receiving the address setting data d3 at time t3, the address setting data d3 is distributed to the address setting unit 7 bit by bit after predetermined processing as described above, and the transmission / reception unit The address setting data d3 is output bit by bit so as to reach 9.

Further, IC3 starts reception of address setting data d4 generated by IC2 at data reception transfer unit 5A at time t5 and bits of address setting data d4 from data reception transfer unit 5A to reliability check unit 5B. Each transfer is started, and the reception of the address setting data d4 is completed by the reliability check unit 5B by time t6 (A (d4)). Further, when the reception of the address setting data d4 as a packet is completed, the reliability check unit 5B confirms the reliability of the address setting data d4. When the address setting data d4 satisfies the reliability, the address setting unit 7 further adds “1” to the address of the own IC according to the address setting command of the address setting data d4 in the same manner as IC1. . As a result, the address of IC3 is “2”. In the address setting data transmission control unit 8, the address setting data generation unit 8B reads the address setting data from the storage unit 8A (hereinafter, “address setting data d7”) and outputs the address setting data d7 by time t7 (B ). The transmission / reception unit 9 starts receiving the address setting data d7 at time t7, and completes transmission toward the IC 4 until time t8 (C (d7)). On the other hand, when receiving the address setting data d4 at time t7, the data reception transfer unit 5A of the IC 3 distributes the address setting data d4 to the address setting unit 7 bit by bit after predetermined processing as described above, and sends it to the transmission / reception unit 9. The address setting data d4 is output for each bit so as to arrive.

Here, the address setting data d1, the address setting data d5, the address setting data d6, and the address setting data d7 are transmitted from the IC3 to the IC4 as described above. As shown in FIG. d3 and address setting data d4 are not transmitted to IC4. This is because the transmission / reception unit 9 preferentially processes the data input from the second terminal with respect to the data input from the first terminal. In the present embodiment, as described above, the address setting data d3 and the address setting data d5 reach the transmission / reception unit 9 of the IC 3 at time t3. At this time, the address setting data d3 output from the transmission / reception unit 5 is input from the first terminal of the transmission / reception unit 9, and the address setting data d5 output from the address setting data transmission control unit 8 is the second of the transmission / reception unit 9. Since the signal is input from the terminal, the address setting data d5 is preferentially transmitted in the transmission / reception unit 9, and the address setting data d3 is discarded. At time t5, the address setting data d4 and address setting data D6 arrive at the transmission / reception unit 9 of the IC3. At this time, the address setting data d4 output from the transmission / reception unit 5 is input from the first terminal of the transmission / reception unit 9, and the address setting data d6 output from the address setting data transmission control unit 8 is the second of the transmission / reception unit 9. Since the signal is input from the terminal, the address setting data d6 is preferentially transmitted in the transmission / reception unit 9, and the address setting data D4 is discarded. Therefore, the address setting data d3 and the address setting data d4 are not transmitted to the IC 4.

Since IC4 receives address setting data d1, address setting data d5, address setting data d6, and address setting data d7 from IC3, the address of IC4 is “3”.

By repeating the above processing, each IC can set an address different from that of the other ICs in its own IC according to the received address setting data. A signal notifying that the address of ICn has been set may be transmitted from ICn to the control unit 2 via the communication line 3 and the communication line 4.

As described above, according to the second embodiment of the present invention, in particular, when the address setting unit 7 sets a predetermined value for the address of the own IC, the predetermined address is set to the predetermined IC address. Since the address setting data transmission control unit 8 for performing control to transmit address setting data having an address addition command for adding a value as an address setting command to a subsequent device of the own IC is provided. Different addresses can be set between the ICs of the electronic device 1 without generating new address numbers in the ICs. For this reason, first, it is not necessary to generate new reliability check data every time data for setting an address is transmitted to each IC, and the time required for address setting is shortened as compared with the prior art. It becomes possible. Second, since the reliability check data that the electronic device 1 can have does not depend on the memory capacity, the number of devices that can be mounted on the electronic device depends on the memory capacity at the time of manufacturing the device. There is no limit.

In the conventional electronic device, communication is performed using at least an address setting command, an address number, and data including reliability check data for these data. According to the second embodiment of the present invention, however, Since the data to be communicated does not necessarily have to define the address number, the amount of data communication can be reduced, and the address can be set to each IC at a higher speed.

According to the second embodiment of the present invention, the transmission / reception unit 9 includes the first terminal to which the data output from the transmission / reception unit 5 is input, and the data output from the address setting data transmission control unit 8. When data is input from the first terminal while processing data input from the second terminal, the data is input from the first terminal. Since the processing of the data input from the second terminal is preferentially processed, the absolute value of the difference between the addresses of the ICs connected to each other may be the same among all the ICs. it can.

Furthermore, according to the second embodiment of the present invention, it is possible to set an address in each IC without using address initial value setting data, and the electronic device 1 according to the first embodiment of the present invention exists. Since the command determination unit 7A is not necessary, high-speed address setting can be performed in each IC of the electronic device 1.

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Control part 3 Communication line 4 Communication line 5 Transmission / reception part 7 Address setting part 8 Address setting data transmission control part 9 Transmission / reception part

Claims (15)

A plurality of devices that are daisy chain connected by communication lines and perform communication between the devices connected to each other via the communication line, and a control unit that is communicably connected to a device at one end of the plurality of devices. An electronic device that performs data communication,
Each of the plurality of devices is
An address setting unit for setting the address of the own device;
A transmission / reception unit that outputs address setting data including the received address addition command as an address setting command to the address setting unit of the own device and a device subsequent to the own device,
Have
The address setting unit, when a common address is set for each of the plurality of devices , according to the number of times the address setting data including the address addition command as an address setting command is received from the transmission / reception unit , An electronic apparatus, wherein an address value obtained by adding a predetermined value to the common address of the own device is set as the address of the own device. If you set the common address value obtained by adding the predetermined value to the address of the previous SL own device Te in the address setting unit as the address of the own device, address the address addition instruction predetermined in the own device The electronic apparatus according to claim 1, further comprising an address setting data transmission control unit that outputs the address setting data provided as a setting command so that the address setting data can be transmitted to a subsequent device.   3. The electronic apparatus according to claim 2, wherein the address setting data including the predetermined address addition command as an address setting command includes reliability check data.   When the received data is address setting data provided with an address setting command for setting a predetermined value in the address as an address setting command, the address setting unit sets the address of the own device according to the instruction of the address setting command. The electronic apparatus according to claim 1, wherein a value is set.   The electronic device according to claim 4, wherein the address setting command causes the device to set an initial value. The address setting unit outputs an address setting processing identification signal when an address is set in the own device by the address setting data;
When the address setting data transmission control unit receives the address setting process identification signal, the address setting data transmission control unit can transmit address setting data including the address addition command as an address setting command to a device subsequent to the address device. The electronic device according to claim 2, wherein the electronic device is output to the electronic device. The transceiver unit is
A first transmission / reception unit capable of receiving data arriving from outside the device;
A second transmission / reception unit capable of transmitting data inside the device to the outside;
With
The second transmission / reception unit includes:
A first terminal for receiving data output from the first transmission / reception unit;
A second terminal for receiving data output from the address setting data transmission control unit;
With
4. The electronic apparatus according to claim 2, wherein data input to the second terminal is processed with priority over data input to the first terminal. A plurality of devices that are daisy chain connected by communication lines and perform communication between the devices connected to each other via the communication line, and a control unit that is communicably connected to a device at one end of the plurality of devices. An address setting method for the plurality of devices in an electronic device that performs data communication,
Each of the plurality of devices is
Outputting the address setting data including the received address addition instruction as an address setting command to the address setting unit of the own device and the subsequent device of the own device;
When said each common address of a plurality of devices are set in accordance with the number of times the address setting unit receives the address setting data with the address addition instruction as an address setting command, the of the self-device Setting an address value obtained by adding a predetermined value to a common address as the address of the device;
An address setting method characterized by comprising: If you set the common address value obtained by adding the predetermined value to the address of the previous SL own device Te in the address setting unit as the address of the own device, address the address addition instruction predetermined in the own device 9. The address setting method according to claim 8, further comprising a step of transmitting address setting data provided as a setting command to a device subsequent to the device.   The address setting method according to claim 9, wherein the address setting data including the predetermined address addition instruction as an address setting command includes reliability check data.   Even when the received data is address setting data having an address setting command for setting a predetermined value in the address as an address setting command, the predetermined value is set in the address of the device according to the instruction of the address setting command. 11. The address setting method according to claim 8, wherein the address setting method is any one of claims 8 to 10.   12. The address setting method according to claim 11, wherein the address setting command is to cause the device to set an initial value. A plurality of devices that are daisy chain connected by communication lines and perform communication between the devices connected to each other via the communication line, and a control unit that is communicably connected to a device at one end of the plurality of devices. An electronic device for performing data communication, comprising:
An address setting unit for setting the address of the own device;
A transmission / reception unit that outputs address setting data including the received address addition command as an address setting command to the address setting unit of the own device and a device subsequent to the own device,
Have
The address setting unit, when a common address is set for each of the plurality of devices , according to the number of times the address setting data including the address addition command as an address setting command is received from the transmission / reception unit , An apparatus configured to set an address value obtained by adding a predetermined value to the common address of the own apparatus as the address of the own apparatus. If you set the common address value obtained by adding the predetermined value to the address of the previous SL own device Te in the address setting unit as the address of the own device, address the address addition instruction predetermined in the own device 14. The apparatus according to claim 13, further comprising an address setting data transmission control unit that outputs address setting data provided as a setting command so that the address setting data can be transmitted to a subsequent apparatus of the own apparatus.   15. The apparatus according to claim 14, wherein the address setting data including the predetermined address addition instruction as an address setting command includes reliability check data.